I had having tear out problems with my box joint jig and decided to blame it on the craftsman 1/2" straight bit that came free with my router table.
I bought a MLCS 1/2" spiral bit. It worked great, giving me no tear out on the same wood that was a problem before. But when I went to assemble the box, it wouldn't go together, the cuts were too small. In desperation I recut it with the old bit and it went together fine. I was very surprised at that, figuring that the spacing would be off and I would just have a pile of scrap, but sometimes you get lucky.
Anyhow, I measured the cuts from the craftsman at 0.504" and the MLCS as
0.496". Presumably my router has no run out at all. (the spacing on the jig is 0.490").I can accept that the craftsman is oversized, a bit extra for sharpening maybe; but is 4 thousanths undersized acceptable for the MLCS. Okay, it was real expensive, but it wasn't exactly cheap either.
Is this something to complain about, or an acceptable tolerance?